In Kuybyshevskoe Reservoir the water level near the settlement of Verkhny Uslon is 53,94 m (-1 cm), its upper critical point is 54.24 m.
In Nizhnekamskoe Reservoir the water level near the city of Naberezhnye Chelny is 63,73 m (+5 cm), its upper critical point is 65.9 m.
Lower tail water level at Nizhnekamsk HPP is 58,53 m (+6 cm), its upper critical point is 60 m.